The Factor Structure of Cognitive Reflection, Numeracy, and Fluid intelligence. The evidence from the Polish adaptation of the Verbal CRT.

Abstract

General and specific cognitive abilities predict normatively (ir)rational thought. However, substantial overlap exists between individual measures of these cognitive abilities (i.e., numeracy, cognitive reflection, intelligence). The present research had two main aims: 1) to investigate the generalizability of the effects of Verbal CRT (a novel measure of cognitive reflection that is less confounded with numeracy and math attitudes than traditional CRT) outside US/UK samples, and 2) to test the factor structure of cognitive abilities. In Studies 1a and 1b, we adapted and tested the validity and psychometric properties of Polish versions of tasks and scales. Next, using a large and diverse sample of Polish adults, we tested five models of the factor structure of cognitive abilities (Study 2). The most parsimonious and best-fitted model contained three latent variables: Verbal CRT, Numeracy (composed of the items from the Berlin Numeracy Test, and classical – numerical – CRT), and Fluid intelligence. We argue that researchers investigating individual differences in rationality should focus on understanding mechanisms underlying specific – rationality-related – cognitive abilities.